linux-kernel - Re: [PATCH v2] ARM: dts: exynos: Enable Mixer node for Exynos5800 Peach Pi machine

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Date:   Tue, 12 Dec 2017 10:43:40 +0000
From:   Guillaume Tucker <guillaume.tucker@...labora.com>
To:     Marek Szyprowski <m.szyprowski@...sung.com>,
        Krzysztof Kozlowski <krzk@...nel.org>,
        Javier Martinez Canillas <javierm@...hat.com>
Cc:     linux-kernel@...r.kernel.org,
        Daniel Vetter <daniel.vetter@...ll.ch>,
        Shuah Khan <shuahkh@....samsung.com>,
        devicetree@...r.kernel.org, Kukjin Kim <kgene@...nel.org>,
        Russell King <linux@...linux.org.uk>,
        linux-samsung-soc@...r.kernel.org,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v2] ARM: dts: exynos: Enable Mixer node for Exynos5800
 Peach Pi machine

On 12/12/17 10:17, Marek Szyprowski wrote:
> Hi Krzysztof,
> 
> On 2017-12-12 11:09, Krzysztof Kozlowski wrote:
>> On Tue, Dec 12, 2017 at 10:55 AM, Krzysztof Kozlowski <krzk@...nel.org> wrote:
>>> On Tue, Dec 12, 2017 at 8:42 AM, Javier Martinez Canillas
>>> <javierm@...hat.com> wrote:
>>>> Commit 1cb686c08d12 ("ARM: dts: exynos: Add status property to Exynos 542x
>>>> Mixer nodes") disabled the Mixer node by default in the DTSI and enabled
>>>> for each Exynos 542x DTS. But unfortunately it missed to enable it for the
>>>> Exynos5800 Peach Pi machine, since the 5800 is also an 542x SoC variant.
>>>>
>>>> Fixes: 1cb686c08d12 ("ARM: dts: exynos: Add status property to Exynos 542x Mixer nodes")
>>>> Signed-off-by: Javier Martinez Canillas <javierm@...hat.com>
>>>> Acked-by: Marek Szyprowski <m.szyprowski@...sung.com>
>>>>
>>>> ---
>>>>
>>>> Changes in v2:
>>>> - Remove RFT tag.
>>> Thanks guys! However I still would like to see a tested-by for this on
>>> Peach Pi (AFAIU, Marek's only acked the code/solution).
>> On the other hand I could just apply it for my for-next branch and
>> we'll see if it fixes kernel-ci boot tests... Not a nice way of
>> testing but apparently no one has Peach Pi.
> 
> Frankly, I don't expect that this will solve the boot hang issue on PeachPi.
> However it should at least hide the unbalanced regulator issue.

We have a peach-pi in our LAVA lab so I've tested it and
actually, it does fix the hang on v4.15-rc3:

   https://lava.collabora.co.uk/scheduler/job/1019877
   https://lava.collabora.co.uk/scheduler/job/1019878

I ran it twice and it booted both times.  I also ran the same
boot tests with the same kernel but the dtb from v4.15-rc3
without the fix to double check and these failed:

   https://lava.collabora.co.uk/scheduler/job/1019879
   https://lava.collabora.co.uk/scheduler/job/1019880


Tested-by: Guillaume Tucker <guillaume.tucker@...labora.com>


Thanks for the fix!

Guillaume